dcrat | a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7

Analysis

max time kernel
111s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-12-2024 09:50

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General

Target

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe
Size

2.1MB
MD5

6261ec3f13e1cc6ae25ee8942db137b0
SHA1

20629ed3f752869dc4980827291bf3064333405f
SHA256

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7
SHA512

ed292a77db5e9926cbaa247e449a4019776b2452d2e8cdadfcea4c3d7551372793b2a1125b44cfd5106d2b03ff178041d413750ee81bfc42d7a3252a934b51f1
SSDEEP

24576:2TbBv5rUyXVpz/IPMofzXxgF5X1u1seTK44vmrUcSgjBYsRX8TGxj4fY3D5K7Tqb:IBJp0PbsCk44v0y4BYgAGxrNKvdVT6

Score

10^/10

dcrat discovery infostealer rat spyware stealer

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 18 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3672	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1696	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3100	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3192	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2980	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5040	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4320	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2648	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4124	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3540	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	844	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	372	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	940	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4640	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	728	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4792	4616	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4536	4616	schtasks.exe	90

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Winver.exe

Executes dropped EXE 2 IoCs

pid	Process
2660	Winver.exe
2884	SppExtComObj.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Mail\smss.exe	Winver.exe
File created	C:\Program Files (x86)\Windows Mail\69ddcba757bf72	Winver.exe
File created	C:\Program Files\MSBuild\taskhostw.exe	Winver.exe
File created	C:\Program Files\MSBuild\ea9f0e6c9e2dcd	Winver.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\addins\OfficeClickToRun.exe	Winver.exe
File opened for modification	C:\Windows\addins\OfficeClickToRun.exe	Winver.exe
File created	C:\Windows\addins\e6c9b481da804f	Winver.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1648	PING.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	Winver.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1648	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4320	schtasks.exe
4640	schtasks.exe
728	schtasks.exe
3100	schtasks.exe
3192	schtasks.exe
5040	schtasks.exe
372	schtasks.exe
940	schtasks.exe
4792	schtasks.exe
2648	schtasks.exe
4124	schtasks.exe
844	schtasks.exe
3672	schtasks.exe
2980	schtasks.exe
4536	schtasks.exe
1696	schtasks.exe
1940	schtasks.exe
3540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe
2660	Winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	Winver.exe
Token: SeDebugPrivilege	2884	SppExtComObj.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 3744	3532	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe	83
PID 3532 wrote to memory of 3744	3532	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe	83
PID 3532 wrote to memory of 3744	3532	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe	83
PID 3744 wrote to memory of 4564	3744	WScript.exe	85
PID 3744 wrote to memory of 4564	3744	WScript.exe	85
PID 3744 wrote to memory of 4564	3744	WScript.exe	85
PID 4564 wrote to memory of 2660	4564	cmd.exe	87
PID 4564 wrote to memory of 2660	4564	cmd.exe	87
PID 2660 wrote to memory of 3864	2660	Winver.exe	111
PID 2660 wrote to memory of 3864	2660	Winver.exe	111
PID 3864 wrote to memory of 928	3864	cmd.exe	113
PID 3864 wrote to memory of 928	3864	cmd.exe	113
PID 3864 wrote to memory of 1648	3864	cmd.exe	114
PID 3864 wrote to memory of 1648	3864	cmd.exe	114
PID 3864 wrote to memory of 2884	3864	cmd.exe	122
PID 3864 wrote to memory of 2884	3864	cmd.exe	122

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe
"C:\Users\Admin\AppData\Local\Temp\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4564
  - - C:\ESD\Winver.exe
      "C:\ESD/Winver.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2660
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\EOPKDC2t5c.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3864
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:928
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:1648
      - C:\Recovery\WindowsRE\SppExtComObj.exe
        
        "C:\Recovery\WindowsRE\SppExtComObj.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:2884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\ESD\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3672

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\ESD\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1696

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\ESD\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3100

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 5 /tr "'C:\Program Files\MSBuild\taskhostw.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3192

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\MSBuild\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 11 /tr "'C:\Program Files\MSBuild\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4320

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4124

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 14 /tr "'C:\Windows\addins\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Windows\addins\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 11 /tr "'C:\Windows\addins\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 11 /tr "'C:\ESD\Winver.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Winver" /sc ONLOGON /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 9 /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe

Filesize
222B

MD5
8decf43a92645d8ba4b81696c5e7b1ae

SHA1
dcc9ca8b24e3adf7568eb0f6b7f5cd27f039faf6

SHA256
6ad34bd4e803fad802052423aeab64f4c60dd3ee55a3167425b9640ae24bfea1

SHA512
72e44773f484d2e69ebd41cc555d9a57c833b3930e1f3b0326c90882035e0dc5fb54e8d4ded22cf9f2d28fb502b37b133b7c1c9f9d89b8c21857b569c51ebc17

Download Submit
C:\ESD\Winver.exe

Filesize
1.8MB

MD5
d9ce1032fee5365065a78bbff7267883

SHA1
4c7471b47d4151908dd204303421d7c64cf4c5c6

SHA256
65d26e7c0b856832e88efefe5c2a9e767fb2a7345715bbd0a6e10f9ac2afb520

SHA512
0455364fa91c07da6fecbfb3e3fdbbbcb909e3176b5b151e3653f8b8ebffc02e14fb3471245df479b83f90cd2e1142bcff82b80555cfb3df113696b2925d9435

Download Submit
C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat

Filesize
57B

MD5
d1a4f1e326e7dfca62327ea69446dc7c

SHA1
253e264c90cbd15836d8c3a1eab3c26756d94047

SHA256
ea091556a5dbab314a6029817a9db64f9b8adc7afb476bbbb11aec0c227f0de2

SHA512
3d4624c169297b50329a4e13f3f559a7a1f02112f6482e45cfba747dad11c6e6642f1411cec5e92d7890f86fb38702f48c75fec4d24332d43484ad7b9dbf29c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\EOPKDC2t5c.bat

Filesize
166B

MD5
372c4b163c603614ee5875c55dee422c

SHA1
144c931e3b39fbd6a24891a0c9f705b4d3d8f2ff

SHA256
f5b3854b3d01b7bbe2a59da281feaf408ec192f73f4c5160e8679154350745cb

SHA512
4e921c6242a8bbbe1e7e3bcd3110355115ab9036cfb3a234294d8ae2b870f8796d43a1de643de78902fd6e66e69c670c0b0cde10aff6e3bab86c7c6421212177

Download Submit
memory/2660-17-0x00000000033E0000-0x00000000033FC000-memory.dmp

Filesize
112KB

Download
memory/2660-15-0x0000000003280000-0x000000000328E000-memory.dmp

Filesize
56KB

Download
memory/2660-13-0x0000000000E90000-0x0000000001064000-memory.dmp

Filesize
1.8MB

Download
memory/2660-18-0x000000001C060000-0x000000001C0B0000-memory.dmp

Filesize
320KB

Download
memory/2660-20-0x0000000003400000-0x0000000003418000-memory.dmp

Filesize
96KB

Download
memory/2660-37-0x000000001C2F0000-0x000000001C399000-memory.dmp

Filesize
676KB

Download
memory/2660-38-0x000000001C7A0000-0x000000001C841000-memory.dmp

Filesize
644KB

Download
memory/2660-39-0x000000001C850000-0x000000001C9F9000-memory.dmp

Filesize
1.7MB

Download
memory/2660-12-0x00007FFEC8B93000-0x00007FFEC8B95000-memory.dmp

Filesize
8KB

Download
memory/2884-47-0x000000001B820000-0x000000001B922000-memory.dmp

Filesize
1.0MB

Download
memory/2884-48-0x000000001BE70000-0x000000001BF19000-memory.dmp

Filesize
676KB

Download